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1829 In Science
The year 1829 in science and technology involved some significant events, listed below. Chemistry * Isaac Holden produces a form of friction match. Mathematics * Peter Gustav Lejeune Dirichlet publishes a memoir giving the Dirichlet conditions, showing for which functions the convergence of the Fourier series holds; introducing Dirichlet's test for the convergence of series; the Dirichlet function as an example that not any function is integrable; and, in the proof of the theorem for the Fourier series, the Dirichlet kernel and Dirichlet integral. He also introduces a general modern concept for a function. * Nikolai Ivanovich Lobachevsky publishes his work on hyperbolic non-Euclidean geometry. * S. D. Poisson publishes ''Sur l'attraction des sphéroides''. Medicine * Dr Benjamin Guy Babington makes the first known use of a laryngoscope. Palaeontology * Jules Desnoyers names the Quaternary period. * Engis 2, part of the skull of a young child and other bones, recognised in 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laryngoscope
Laryngoscopy () is endoscopy of the larynx, a part of the throat. It is a medical procedure that is used to obtain a view, for example, of the vocal folds and the glottis. Laryngoscopy may be performed to facilitate tracheal intubation during general anaesthesia or cardiopulmonary resuscitation or for surgery, surgical procedures on the larynx or other parts of the upper respiratory tract#Respiratory tree, tracheobronchial tree. Direct laryngoscopy Direct laryngoscopy is carried out (usually) with the patient lying on his or her back; the laryngoscope is inserted into the mouth on the right side and flipped to the left to trap and move the tongue out of the line of sight, and, depending on the type of blade used, inserted either anterior or posterior to the epiglottis and then lifted with an upwards and forward motion ("away from you and towards the roof "). This move makes a view of the glottis possible. This procedure is done in an operation theatre with full preparation for r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Robinson Palmer
Henry Robinson Palmer (1795–1844) was a British civil engineer who designed the world's second monorail and the first elevated railway. He is also credited as the inventor of corrugated metal roofing, still one of the world's major building materials. Early life A son of Samuel Palmer and his wife Elizabeth Walker, Henry Robinson Palmer was born in Hackney, east London. He served a five-year apprenticeship with the mechanical engineer Bryan Donkin from 1811, where he also became a skilled draughtsman. He was then taken on by Thomas Telford, for whom he worked for some seven years, rising to become his chief assistant. He carried out numerous surveys for Telford, including the Knaresborough Canal and Railway, Burnham Marshes, Archway Road London, Portishead Harbour, and the Isles of Scilly. He may have acted as the resident engineer for the Loose Hill and Valley Road improvement scheme, which he surveyed in 1820. In 1821 he obtained a patent for a monorail system, which was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vienna
en, Viennese , iso_code = AT-9 , registration_plate = W , postal_code_type = Postal code , postal_code = , timezone = CET , utc_offset = +1 , timezone_DST = CEST , utc_offset_DST = +2 , blank_name = Vehicle registration , blank_info = W , blank1_name = GDP , blank1_info = € 96.5 billion (2020) , blank2_name = GDP per capita , blank2_info = € 50,400 (2020) , blank_name_sec1 = HDI (2019) , blank_info_sec1 = 0.947 · 1st of 9 , blank3_name = Seats in the Federal Council , blank3_info = , blank_name_sec2 = GeoTLD , blank_info_sec2 = .wien , website = , footnotes = , image_blank_emblem = Wien logo.svg , blank_emblem_size = Vienna ( ; german: Wien ; ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accordion
Accordions (from 19th-century German ''Akkordeon'', from ''Akkord''—"musical chord, concord of sounds") are a family of box-shaped musical instruments of the bellows-driven free-reed aerophone type (producing sound as air flows past a reed in a frame), colloquially referred to as a squeezebox. A person who plays the accordion is called an accordionist. The concertina , harmoneon and bandoneón are related. The harmonium and American reed organ are in the same family, but are typically larger than an accordion and sit on a surface or the floor. The accordion is played by compressing or expanding the bellows while pressing buttons or keys, causing ''pallets'' to open, which allow air to flow across strips of brass or steel, called '' reeds''. These vibrate to produce sound inside the body. Valves on opposing reeds of each note are used to make the instrument's reeds sound louder without air leaking from each reed block.For the accordion's place among the families of musical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patent
A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an enabling disclosure of the invention."A patent is not the grant of a right to make or use or sell. It does not, directly or indirectly, imply any such right. It grants only the right to exclude others. The supposition that a right to make is created by the patent grant is obviously inconsistent with the established distinctions between generic and specific patents, and with the well-known fact that a very considerable portion of the patents granted are in a field covered by a former relatively generic or basic patent, are tributary to such earlier patent, and cannot be practiced unless by license thereunder." – ''Herman v. Youngstown Car Mfg. Co.'', 191 F. 579, 584–85, 112 CCA 185 (6th Cir. 1911) In most countries, patent rights fall under private law and the patent holder mus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyrill Demian
Cyrill Demian (Arm. Կյուրեղ Դեմյան) (1772–1849) was an Armenian inventor of Armenopolis origin who made his living as an organ and piano maker with his two sons, Karl and Guido, in Mariahilfer Straße No. 43 in Vienna, Austria. On May 6, 1829, Cyrill and his sons presented a new instrument to the authorities for patent - the accordion. The patent was officially granted on May 23, 1829. Demian's accordion description (Translated Summary of Original Old-German Manuscript) Its appearance essentially consists of a little box with feathers of metal plates and bellows fixed to it, in such a way that it can easily be carried, and therefore traveling visitors to the country will appreciate the instrument. It is possible to perform marches, arias, melodies, even by an amateur of music with little practice, and to play the loveliest and most pleasant chords of 3, 4, 5 etc. voices after instruction. The first accordion debate The advent of the accordion is the subject of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philippe-Charles Schmerling
Philippe-Charles or Philip Carel Schmerling (2 March 1791 Delft – 7 November 1836, Liège) was a Dutch/Belgian prehistorian, pioneer in paleontology, and geologist. He is often considered the founder of paleontology. In 1829 he discovered the first Neanderthal fossil in a cave in Engis, the partial cranium of a small child, although it was not recognized as such until 1936, and is now thought to be between 30,000-70,000 years old. It was the second discovery of a fossil of the genus Homo after the discovery of the Red Lady of Paviland in Wales in 1823. Life Philipus Carel, later Philippe-Charles, Schmerling was the son of Dutch parents, Jan Carel, a trader from 's-Hertogenbosch, North Brabant, and Lucia van Koijck from Dordrecht. Schmerling studied medicine in Delft and Leiden. Afterwards he served as physician in the Dutch army between 1812 and 1816. On 17 October 1821 in Venlo he married Elizabeth Douglas. They had two daughters, in 1823 and 1825. In 1822, Schmerling a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Kingdom Of The Netherlands
The United Kingdom of the Netherlands ( nl, Verenigd Koninkrijk der Nederlanden; french: Royaume uni des Pays-Bas) is the unofficial name given to the Kingdom of the Netherlands as it existed between 1815 and 1839. The United Netherlands was created in the aftermath of the Napoleonic Wars through the fusion of territories that had belonged to the former Dutch Republic, Austrian Netherlands, and Prince-Bishopric of Liège in order to form a buffer state between the major European powers. The polity was a constitutional monarchy, ruled by William I of the House of Orange-Nassau. The polity collapsed in 1830 with the outbreak of the Belgian Revolution. With the ''de facto'' secession of Belgium, the Netherlands was left as a rump state and refused to recognise Belgian independence until 1839 when the Treaty of London was signed, fixing the border between the two states and guaranteeing Belgian independence and neutrality as the Kingdom of Belgium. Background Before the French ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engis
Engis (; wa, Indji) is a municipality of Wallonia located in the province of Liège, Belgium. On 1 January 2006 Engis had a total population of 5,686. The total area is 27.74 km² which gives a population density of 205 inhabitants per km². The municipality consists of the following districts: Clermont-sous-Huy, Engis and Hermalle-sous-Huy. In 1829, in this village, Philippe-Charles Schmerling discovered the first Neanderthal ever, Engis 2, the damaged skull of a young child. This was before the 1856 discovery of the Neanderthal type specimen in the Neander Valley. Its importance was not recognised until 1936. Pollution fatalities In late 1930 and early 1931, several thousand cases of acute pulmonary attacks occurred in the Meuse valley, centered on Engis, and 60 people died. A commission of inquiry set up by the Belgian government concluded that the cause was poisonous waste gases, primarily sulfur dioxide, emitted by the many factories in the valley and the furnace ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Awirs
Awirs ( wa, Les Awires) is a village of Wallonia and a district of the municipality of Flémalle, located in the province of Liège, Belgium. The population on December 31, 2004 was 2,869. A notable building is the 18th century Château d'Aigremont. A Neanderthal skull, Engis 2, was found in the Schmerling Caves The Schmerling Caves (also known as Grottes d'Engis, meaning Engis Caves) are a group of caves located in Wallonia on the right bank of the stream called the Awirs, near the village of Awirs in Flémalle, Belgium. The caves are notable for their p .... Sub-municipalities of Flémalle Former municipalities of Liège Province {{Liege-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neanderthal
Neanderthals (, also ''Homo neanderthalensis'' and erroneously ''Homo sapiens neanderthalensis''), also written as Neandertals, are an extinct species or subspecies of archaic humans who lived in Eurasia until about 40,000 years ago. While the "causes of Neanderthal disappearance about 40,000 years ago remain highly contested," demographic factors such as small population size, inbreeding and genetic drift, are considered probable factors. Other scholars have proposed competitive replacement, assimilation into the modern human genome (bred into extinction), great climatic change, disease, or a combination of these factors. It is unclear when the line of Neanderthals split from that of modern humans; studies have produced various intervals ranging from 315,000 to more than 800,000 years ago. The date of divergence of Neanderthals from their ancestor ''H. heidelbergensis'' is also unclear. The oldest potential Neanderthal bones date to 430,000 years ago, but the classification ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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